"Three days ago, 700 people gathered to protest this, and police gassed them. Next day, 7,000 people gathered in the same square, and the police gassed them. And on Saturday, 700,000 people came together, and then the police fled."It started as a protest against the bulldozing of Gezi, a park in Istanbul, and has grown into a protest for freedom of expression and human rights. One of my favorite explanations of how the protests grew, in both senses, is posted by an activist in the movement here.
Here is a fabulous page to share, full of inspiring images.